Run Steam in admin mode, Run all trainers in admin mode, Uninstall Norton and choose another AV.
As Neo has pointed out that W8 and up only use IE 10 or up. Also that the trainers use IE Files. IE is needed to be on your system!
Also note that older games will most likely use trainers that need IE9 on the system which means having Win7.
There really is not much else can be said.
Hi Toki,
I'm using Win7 and the latest IE version is 11.
To use older trainers for older games you have to go down to Windows XP and IE 8 or 9.
Can go to Vista too but it's buggier than XP
I can use older trainers for older games on win 7 perfectly fine with IE9 I have never changed from this since I got win 7 and every trainer I use from old to new work fine
[Edited by Toki, 12/14/2014 7:12:55 PM]
DISM.exe /Online /Cleanup-image /Scanhealth
DISM.exe /Online /Cleanup-image /Restorehealth